P0C47

Hybrid/EV Battery Pack Coolant Pump A Control Circuit/Open

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–444 (est.)

Symptoms

Hybrid system power reduction
Battery overheating message on the dashboard
Noise or lack of operation of the cooling pump
Increasing battery temperature
System transition to emergency mode

Causes

Battery cooling pump malfunction
Open or short circuit in control circuit
Pump relay or fuse problems
Malfunction of the hybrid system control unit
Poor contacts in the pump connectors

How to Fix

Check coolant pump fuses and relays
Diagnose the operation of the cooling pump
Check the integrity of the control circuit (wire harness)
Inspect and clean the pump connector contacts
If necessary, replace the battery cooling pump

Related codes

P0C48 P0C49 P0C4A